An inter-cooler is an automotive part. When using boost equipment, such as a turbocharger, compressed air is very hot. To increase performance, the air is cooled, and this is what/is/used/for/that/purpose.
An intercooler is a vehicle radiator that is designed to cool the hot supercharged air from its turbocharger. It spools up the turbo and works in reaching the engine's performance potential. Intercoolers are all about turbocharging and boosts. Many car owners opt to get from variety of different used parts and install it themselves instead of buying a new core.